Fix rendering the cleaner page on Ruby 3

[sharang-d]

What?

Makes the cleaner page work on Ruby 3.

Screenshots

Before:

After:

Notes

This PR is similar to resque/resque-scheduler@e7e2531.

@ono I'm aware of #47 but hoping we can get this in because it is tiny and makes the gem work with Ruby 3 :)

[NobodysNightmare]

I can confirm that this fixes the issue. Not sure if @ono still maintains this project, but it would be nice to see this fixed upstream.

Let me know if I can help in any meaningful way.

[josh-m-sharpe]

fixed this in https://rubygems.org/gems/resque-cleanerer

[hostaway-greg]

fixed this in https://rubygems.org/gems/resque-cleanerer

How do I use that? I have installed that gem and replaced it in my config file but I am getting this:

sudo gem install resque-cleanerer
Successfully installed resque-cleanerer-0.5.0
Parsing documentation for resque-cleanerer-0.5.0
Done installing documentation for resque-cleanerer after 0 seconds
1 gem installed

resque-web -p 1335 config/resque-web.rb
<internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:85:in `require': cannot load such file -- resque-cleanerer (LoadError)
        from <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:85:in `require'
        from (eval):1:in `load_config_file'
        from /var/lib/gems/3.0.0/gems/resque-2.6.0/lib/resque/web_runner.rb:252:in `module_eval'
        from /var/lib/gems/3.0.0/gems/resque-2.6.0/lib/resque/web_runner.rb:252:in `load_config_file'
        from /var/lib/gems/3.0.0/gems/resque-2.6.0/lib/resque/web_runner.rb:102:in `before_run'
        from /var/lib/gems/3.0.0/gems/resque-2.6.0/lib/resque/web_runner.rb:47:in `initialize'
        from /var/lib/gems/3.0.0/gems/resque-2.6.0/bin/resque-web:15:in `new'
        from /var/lib/gems/3.0.0/gems/resque-2.6.0/bin/resque-web:15:in `<top (required)>'
        from /usr/local/bin/resque-web:25:in `load'
        from /usr/local/bin/resque-web:25:in `<main>'